Lanyards are $5.95 for kids to $9.95 for adults but there are plenty for around $6.95 for adults as well. Please avoid those sellers who have pins up for auction for so cheap, those pins are "scrappers" which are overruns or seconds not approved by Disney, they should be "scrapped" hence the term scrapper. Basically these are considered fakes. Please pop on down to the Collectors Board, we have a list there of sellers many of us have had personal experience with, both "good" and "bad" sellers. If you have any questions please let me know, I'm not the "scrapper police" (as I've been rudely referred to in the past) but I am somewhat knowledgeable in this hobby, my whole family does this so I'm edumacated a little bit. LOL
Anyway, there is a list of ebayers that are good to buy from. I'd avoid anyone who's pins for under $2.00 or anyone who has a lot of large lots up for auction, IME those are people who are selling scrappers, they also get very defensive when you question them. Of course there will be a few here and there who are just clearing out their collections, sometimes they will have pins up for good deals but you just don't know until you try.
I have yet to see a CM refuse a trade w/ any child or any adult for that matter. If the CM (and many of them are pretty clueless about the 'authentic' pin versus 'scrapper' pin) thinks that the pin is not really 'tradable', they will usually just trade w/ the person and then toss it in their pocket instead of putting it on their lanyard.
Actually, many scrappers were way better quality than the Dis Store pins. 
)
I have yet to see a CM refuse a trade w/ any child or any adult for that matter. If the CM (and many of them are pretty clueless about the 'authentic' pin versus 'scrapper' pin) thinks that the pin is not really 'tradable', they will usually just trade w/ the person and then toss it in their pocket instead of putting it on their lanyard.
As far as getting scrappers on ebay. Buy the pins you want. There are many scrappers that are so close to the original that you would have to check each and every pin against the original issue which is EXTREMELY time consuming and not necessarily an easy task. I just bought 20 pins from an ebay seller that allowed you to pick however many you wanted for 1.20 a piece. I didn't want to get too many in case they weren't good quality. They all look fine to me, and I'm not spending my time trying to 'authenticate' the legitimacy of each and every one. As I've previously stated in other posts, if Disney was really concerned about scrapper pins infiltrating the trading 'world', they would do something about it. But evidently, they don't care enough to address it. I usually trade about 200 pins on a trip. I am not spending crazy amounts of $$ to do it. I used to get some pretty good deals on clearanced pins at the Disney store but they haven't been carrying pins lately (at least not around here). Oh and BTW, many of the Disney store pins were not nearly as good of a quality as the rack pins at WDW.
Technically, a CM is not supposed to take a pin in a trade that they already have on their lanyard, but I've seen many of them do it anyway. I've also seen them trade for a non-Disney pin too and that is a huge no-no too. But they don't really enforce their own trading rules. That is why I say, that Disney doesn't really care about the authenticity of their pins. If they were concerned about scrappers they could find a way to fix the problem.
So the point to my post is.... buy the pins you want to buy from ebay or wherever. Go to WDW, enjoy pin trading and have fun.
Oh and if you do decide to try to pin trad at DTD....
DO BE CAREFUL. Many (not all of them though) of those traders are 'shady' and will take advantage of the 'newbie' pin trader. They will try to get you to go into the store and buy them a particular pin and then trade it for one that is much less valuable. It's best as a rooky trader, to stick to trading w/ just the CM's. Many people like to take advantage of the 'newbie' in trading.
Best of Luck, Have a Wonderful trip, and happy trading!!!
(teasing....
Better be careful englishrose, those scrappers that they sell on ebay have the same disney back stamps on them too! You just might have gotten scrappers if they were cheap. Didn't you know that all of the cheap pins that they sell on ebay are ALWAYS scrappers?
I did read. And that is what is/was implied. I buy my trading pins mostly from ebay now (scrappers or not) and if Disney cared about it, then they would do something to fix what some traders see as a problem.
I will continue to post MY personal experiences and state that most large lots I've received have been full of scrappers. They are MY experiences not anyone else's. I will continue to buy my pins from eBay and mousepins and a few other websites I know of, but I will also continue to post about scrappers and try to put a stop to them. And yes, Disney does care, so does eBay, that's why they shut down people who sell fakes. It takes a lot of effort and patience but it does work. 
